Photography Contest Deadline for Spring Division of the 2020 Mines of Spain Photo Contest. Contest submissions are due by June 1 postmark via snailmail due to COVID 19 restrictions. Please send photo and entry slip to Mines of Spain 8991 Bellevue Heights Rd, Dubuque, Ia 52003. Please see all contest rules and regulations here https://www.minesofspain.org/wp-content/uploads/2020/01/MOS-Photography-Entry-Form-2020.pdf